package com.example.gulimall.ssoclient.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.client.RestTemplate;

import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;

/**
 * @author wzb
 * @version V1.0
 * @Package com.example.gulimall.ssoclient.controller
 * @date 2022-08-19 10:19
 * @Copyright ©
 */
@Controller
public class HelloController {

    @Value("${sso.server.url}")
    String ssoServerUrl;

    /**
     * 无效登录就可以访问
     *
     * @return
     */
    @ResponseBody
    @GetMapping("/hello")
    public String hello() {

        return "hello";
    }

    /**
     * 感知这次是在ssoserver登录成功跳转回来的
     *
     * @param model
     * @param session
     * @param token   只有去ssoserver登录成功跳转回来就会带上
     * @return
     */
    @GetMapping("/boss")
    public String employees(Model model,
                            HttpSession session,
                            @RequestParam(value = "token", required = false) String token) {

        if (!StringUtils.isEmpty(token)) {
            //去ssoserver登录成功跳转回来就会带上
            //TODO 去ssoserver获取当前token真正对应的用户信息
            RestTemplate restTemplate = new RestTemplate();
            ResponseEntity<String> forEntity = restTemplate.getForEntity("http://sso.com:8080/userInfo?token=" + token, String.class);
            String body = forEntity.getBody();
            session.setAttribute("loginUser", body);
        }

        Object loginUser = session.getAttribute("loginUser");
        if (loginUser == null) {
            // 没登陆，跳转到登陆服务器进行登录

            //跳转过去以后，使用url上的查询参数标识我们自己是哪个页面
            //redirect_url=http://client1.com:8080/employees"
            return "redirect:" + ssoServerUrl + "?redirect_url=http://client2.com:8082/boss";
        } else {
            List<String> emps = new ArrayList<>();
            emps.add("张三");
            emps.add("李四");
            model.addAttribute("emps", emps);
            return "list";
        }


    }


}
